Item No NVK-5416 Description The Novak 540 Brushless Motor Cooling Kit contains one Novak Velociti Brushless Motor Sleeve Heat Sink, one Novak Black Cooling Fan, screws and thermal paste to provide maximum cooling for any Novak 540-size brushless motor, including the Ballistic, Velociti and SS Pro-Series. The motor sleeve heat sink features high-efficiency ribbed cooling fins with the Velociti "V" shape, and is anodized in either black (Kit #5416), purple #S5417 or blue #S5418. The Novak cooling fan is a high-efficiency fan (2.8 CFM) and is lightweight. Measures 25x25x10mm (0.98x0.98x0.39 in.). This fan installs easily on the Novak motor heat sink with the included screws and plugs directly into any Novak ESC that features fan output pins that accepts a two-pin JST plug.